https://scholars.lib.ntu.edu.tw/handle/123456789/407390
Title: | Preparation and photoluminescence properties of Sr4Al 14O25:Eu2+ phosphors synthesized via the microemulsion route | Authors: | Chang C.-C. Yang C.-Y. Lu C.-H. |
Issue Date: | 2013 | Journal Volume: | 24 | Journal Issue: | 5 | Start page/Pages: | 1458-1462 | Source: | Journal of Materials Science: Materials in Electronics | Abstract: | Strontium aluminate phosphors doped with europium ions (Sr 4Al14O25:Eu2+) were successfully synthesized via the microemulsion route. In comparison with the traditional solid-state reaction process, the calcination temperature of Sr 4Al14O25:Eu2+ phase in this study was lowered to 1,100 ¢XC when the flux was added. In addition, the particle size of Sr4Al14O25:Eu2+ phosphors prepared via the microemulsion route was greatly reduced to 50 nm. The lowered synthesis temperature and reduced particle size are attributed to nano-scaled micelles formed in the microemulsion system. The emission and excitation intensity of Sr4Al14O25:Eu2+ phosphors were increased with an increase in the synthesis temperature. In addition, the rise in the calcination temperature lowered the afterglow characteristics of Sr4Al14O25:Eu2+ phosphors. The microemulsion route was demonstrated to be an more effective process than the solid-state reaction process for preparing Sr 4Al14O25:Eu2+ phosphors. ? Springer Science+Business Media New York 2012. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407390 | ISSN: | 09574522 | DOI: | 10.1007/s10854-012-0952-x |
Appears in Collections: | 化學工程學系 |
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